The home of SwiftCraftyMonkey! Join Susan as she obsesses about cosmetic chemistry and other things (some possibly related to monkeys). Often strange, occasionally useful, and always worth a stop as a point of interest on your journey through the Intertron.

Preservatives: Formaldehyde donors

Preservatives come in two main groups – the formaldehyde donors and the non-formaldehyde donors. Formaldehyde donors include DMDM hydantoin, diazolidinyl urea, imidiazolidinyl urea, and quaternium 15. Non-formaldehyde donors include everything else like phenoxyethanol and iodopropynyl butylcarbamate.The formaldehyde donors are more water soluble than oil soluble, and work by decomposing slowly over the life span of…...

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